Article Per Year (5 Year)
p-Index From 2021 - 2026
7.837
P-Index
This Author published in this journals
All Journal Journal of Education and Instruction (JOEAI) JURNAL PENDIDIKAN TAMBUSAI Jurnal Ilmiah Mandala Education (JIME) JUPE : Jurnal Pendidikan Mandala Imajiner: Jurnal Matematika dan Pendidikan Matematika Jurnal Pengabdian kepada Masyarakat Nusantara JURNAL PENDIDIKAN SAINS SOSIAL DAN AGAMA Dharmas Education Journal (DE_Journal) Indo-MathEdu Intellectuals Journal Jurnal MathEducation Nusantara JURNAL CURERE Journal of Comprehensive Science Jurnal Ilmu Pendidikan dan Sosial Journal of Artificial Intelligence and Digital Business Innovative: Journal Of Social Science Research Journal of Sustainable Community Service JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah Jurnal Pengabdian Masyarakat SAMBARA: Jurnal Pengabdian Kepada Masyarakat
Tambunan, Hardi
Unknown Affiliation
Religion Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Nursing Physics Public Health Social Sciences Other

Published : 62 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 62 Documents
Search

 3   4   5   6   7 
BIMBINGAN ROHANI UNTUK MENINGKATKAN MINAT DAN MOTIVASI BELAJAR SISWA DI SMK NEGERI 1 MERDEKA Tambunan, Hardi; Sinaga, Lorinta Rupmahita; Siagian, Rebeka br; Simamora, Dinarti; Tampubolon, Samto Rediwan
JOURNAL OF SUSTAINABLE COMMUNITY SERVICE Vol. 4 No. 2 (2024): MARCH
Publisher : Transpublika Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55047/jscs.v4i2.611

Abstract

The aim of community service (PkM) is to carry out spiritual guidance to increase students' interest and motivation in studying Christianity. This PkM was implemented at the Merdeka 1 State Vocational School, Berastagi, Karo Regency, North Sumatra. The number of spiritual guidance participants was 120 people. PkM is implemented through spiritual guidance in Christian religious subjects in 12 (twelve) meetings, from 02 to 27 February 2024. The technique for implementing PkM is spiritual guidance which includes (1) singing, (2) praying (3) explaining the material, (4) applications in daily life, (5) questions and answers, (6) playing (games). A questionnaire instrument was used to obtain data about the impact of spiritual guidance on students' interest and motivation in studying Christianity. Based on descriptive analysis it can be concluded that after following spiritual guidance; (1) students' interest in learning increases with the high category, and (2) students' learning motivation increases with the high category in studying Christianity.
Pembelajaran Berbasis Projek Terhadap Kemampuan Pemahaman Konsep Siswa pada Materi Bangun Ruang Tabung di SMP Simamora, Rona Marisa; Tambunan, Hardi; Pangaribuan, Firman
Indo-MathEdu Intellectuals Journal Vol. 7 No. 1 (2026): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v7i1.5129

Abstract

This study aims to determine the effect of project-based learning on students' conceptual understanding abilities in the topic of cylindrical three-dimensional shapes in junior high school. The type of research used is quasi-experimental with a pretest-posttest control group design. The research subjects consisted of 64 students, divided into an experimental class and a control class, each comprising 32 students. The research instrument was a conceptual understanding ability test consisting of essay questions. The data were analysed using the Shapiro-Wilk normality test, Levene's Test for homogeneity, and the independent two-sample t-test. The results showed that the posttest data of both classes were normally distributed and had homogeneous variances. The t-test indicated a significant difference between the conceptual understanding abilities of students in the experimental and control classes (Sig. = 0.006 < 0.05), with the experimental class posttest mean being higher. This indicates that project-based learning is effective in enhancing students' conceptual understanding skills. Project-based learning provides contextual learning experiences, encourages active student engagement, and strengthens meaningful understanding of mathematical concepts.
Eksplorasi Pemanfaatan Alat Musik Keteng-Keteng Sebagai Media Pembelajaran Bangun Ruang Sisi Lengkung Tabung di Kelas IX SMP Sitepu, Edi Petra; Tambunan, Hardi; Pangaribuan, Firman
Indo-MathEdu Intellectuals Journal Vol. 7 No. 1 (2026): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v7i1.5134

Abstract

This study aims to describe the use of keteng-keteng musical instruments as a medium for teaching mathematics on the subject of curved tube shapes in ninth grade junior high school. The study uses a descriptive qualitative approach with ninth grade junior high school students as the research subjects. Data collection was carried out through observation of the learning process, interviews with students and teachers, and documentation of learning activities. Data analysis was carried out through the stages of data reduction, data presentation, and conclusion drawing using triangulation techniques to maintain data validity. The results showed that the use of keteng-keteng musical instruments helped students understand the concept of cylinders more concretely through direct observation of the shape, elements, and characteristics of cylinders. In addition, the use of this locally-based media was able to increase student engagement, interest in learning, and activity in the mathematics learning process. Thus, the keteng-keteng musical instrument can be used as an alternative contextual and meaningful learning media for mathematics in the subject of curved tube shapes.  
Pengaruh Penerapan Pembelajaran Mendalam (Deep Learning) Terhadap Kemampuan Berfikir Kritis Siswa pada Pembelajaran Matematika di Kelas XI SMA Damanik, Friska Dewi Trymidawati; Tambunan, Hardi; Pangaribuan, Firman
Indo-MathEdu Intellectuals Journal Vol. 7 No. 1 (2026): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v7i1.5156

Abstract

This study aims to analyze the effect of deep learning on students' critical thinking skills in mathematics learning in grade XI high school. This study uses a quantitative approach with a quasi-experimental design involving one experimental class and one control class. Deep learning treatment was given to the experimental class, while the control class followed conventional learning. Data on critical thinking skills were collected through a validated posttest. Data analysis was performed using the Shapiro–Wilk test to test normality, the Levene test to test homogeneity, and the independent samples t-test to test the difference in means between the two groups. The results of the analysis showed a significance value of 0.000, which is less than 0.05, indicating a significant difference between the critical thinking skills of students in the experimental class and the control class. These findings indicate that deep learning has a positive and significant effect on improving students' critical thinking skills in mathematics learning.
Implementasi Modul Pembelajaran Berbasis PjBL Terhadap Kemampuan Berfikir Kreatif Siswa pada Materi Bangun Ruang Melalui Pembuatan Miniatur Bangunan Adat Batak Toba di SMP Hutapea, Jernyta Futri Agustina Br.; Tambunan, Hardi; Pangaribuan, Firman
Indo-MathEdu Intellectuals Journal Vol. 7 No. 2 (2026): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v7i2.5176

Abstract

This study aims to determine the effect of implementing a Project Based Learning (PjBL) based learning module on students' creative thinking abilities in solid geometry material through the creation of a Batak Toba traditional building miniature in junior high school. This study uses a quantitative approach with a quasi-experimental design of the non-equivalent control group type. The research sample consisted of two classes, namely the experimental class that received treatment using the PjBL-based module and the control class that used conventional learning. Data collection techniques were conducted through pretests and posttests using mathematical creative thinking ability test instruments referring to indicators of fluency, flexibility, originality, and elaboration. Data were analysed through normality tests, homogeneity tests, and Independent Sample t-Test. The results show that the data are normally distributed and homogeneous. The hypothesis test obtained a significance value of 0.000 (< 0.05), indicating a significant difference between the creative thinking abilities of students in the experimental and control classes. Thus, the implementation of the PjBL-based learning module through a Batak Toba traditional building miniature project has proven effective in enhancing the mathematical creative thinking abilities of junior high school students
Integrasi LKPD Berbasis Etnomatematika Rumah Bolon Batak Toba Terhadap Hasil Belajar Geometri Siswa di SMP Sinaga, Amrinaldo; Tambunan, Hardi; Pangaribuan, Firman
Indo-MathEdu Intellectuals Journal Vol. 7 No. 2 (2026): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v7i2.5193

Abstract

This study aims to determine the effect of using ethnomathematics-based LKPD Rumah Bolon Batak Toba on the geometry learning outcomes of junior high school students. The research uses a quantitative approach with a quasi-experimental design type pretest–posttest control group design. The research subjects consist of two classes, namely the experimental class and the control class, each comprising 20 students. Data were obtained through pretest and posttest, then analysed using normality test, homogeneity test, Independent Samples t-test, and N-Gain analysis. The analysis results show that the data are normally distributed and homogeneous. The t-test on posttest scores and N-Gain showed a significance value of 0.000 < 0.05, indicating a significant difference in results and learning improvement between the experimental and control classes. Therefore, it can be concluded that the use of ethnomathematics-based LKPD Rumah Bolon Batak Toba has a significant effect on improving learning outcomes. Thus, it can be concluded that the use of ethnomathematics-based LKPD of the Batak Toba Bolon House has a significant effect on improving the geometric learning outcomes of junior high school students.
Comparative Analysis of Learning With Jigsaw and Think Pair Share (TPS) on Mathematical Problem Solving Abilities on The Properties of Exponents in Grade X Manik, Jois Febri; Tambunan, Hardi; Sinaga, Samuel Juliardi
Jurnal Pendidikan, Sains Sosial, dan Agama Vol. 7 No. 2 (2021): Jurnal Pendidikan, Sains Sosial dan Agama
Publisher : STABN RADEN WIJAYA WONOGIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53565/pssa.v7i1.2673

Abstract

This study aims to analyze the comparison of cooperative learning models, Jigsaw and Think Pair Share (TPS), on students’ mathematical problem-solving abilities in the topic of exponent properties among tenth-grade students at SMK Free Methodist Medan in the 2025/2026 academic year. The research method employed was a quasi-experimental design with a pretest-posttest group design. The population consisted of all tenth-grade students at SMK Free Methodist Medan, while the sample included two classes: class X RPL taught using the Jigsaw model and class X TKJ taught using the TPS model. The research instrument was an essay test developed based on mathematical problem-solving indicators, and the data were analyzed using an independent samples t-test.The results of the study indicate that: (1) there is a significant difference in mathematical problem-solving abilities between students taught with the Jigsaw and TPS models (sig. 0.023 < 0.05), and (2) the Jigsaw learning model is more effective than the TPS model in improving students’ mathematical problem-solving abilities (sig. 0.011 < 0.05). Therefore, the Jigsaw learning model is recommended as a superior alternative cooperative learning strategy to enhance students’ mathematical problem-solving skills in the topic of exponents at the vocational high school level
Investigasi Minat dan Motivasi Belajar Matematika Siswa SMP dalam Pembelajaran Daring di Era Pandemic Covid-19 Silalahi, Lulu Brygita; Sihombing, Susi; Purba, Tuty Novelinda; Marpaung, Riko Kurniawan; Sinaga, Wita; Tambunan, Hardi
JOEAI (Journal of Education and Instruction) Vol. 4 No. 2 (2021): JOEAI (Journal of Education and Instruction)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/joeai.v4i2.2810

Abstract

This study aims to investigate the interest and motivation in learning mathematics for junior high school students during online learning during the Covid-19 pandemic in depth and to explore the faktors that influence students' interest and motivation in learning using triangulation techniques, namely observation and interviews. This research uses descriptive qualitative research method with the type of case study research. This research was conducted at SMP Negeri II Dolok Pardamean, Simalungun Regency. The population in this study were all seventh grade students for the 2020/2021 academic year at SMP Negeri II Dolok Pardamean. The sample used was all students of class VII-1, then 3 students were selected for the 2020/2021 academic year. Based on the results and discussion of the research, it shows that most of the seventh grade students of SMP Negeri II Dolok Pardamean have high interest and motivation in learning mathematics, which is indicated by the average percentage of students' interest and motivation in learning mathematics, which is 76.46%. In conclusion, online learning that has been carried out at SMP Negeri II Dolok Pardamean has succeeded in increasing interest and motivation in learning mathematics for grade VII-1 students and is in the high category. The success faktor in increasing students' interest and motivation in learning is influenced by teachers and students' family support. Keywords: Online learning, interest in learning, students' motivation to learn mathematics, the covid-19 pandemic
Efektivitas Pembelajaran Berbasis Masalah Terhadap Kemampuan Berpikir Tingkat Tinggi Siswa pada Materi SPLTV Kelas X SMA Situmorang, Mahanda Dinaria; Tambunan, Hardi; Sihombing, Dame Ifa
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 8, No 3 (2026): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v8i3.27498

Abstract

This study was conducted to determine the effectiveness of implementing problem-based learning (PBL) on students’ higher-order thinking skills regarding SPLTV material in 10th grade at State High School 17 Medan during the 2025/2026 academic year. This study is a quantitative study using a one-shot case study design. The population in this study consists of all 10th-grade students at State High School 17 Medan, comprising 9 classes, and the sample consists of classes 10-8 and 10-9, selected using purposive sampling. The instruments used in this study include tests, questionnaires, and observation sheets, all of which were first tested for validity and reliability. The effectiveness of learning was assessed based on effectiveness indicators, namely the systematic structure of instruction, teacher communication, student response, student activity, and criteria for the achievement of learning objectives. Data from each indicator instrument in this study were analyzed using descriptive analysis with the aid of frequency distribution tables and tables of criteria for the achievement of learning objectives. The results of this study indicate that all five indicators—namely, the systematic nature of learning—met the “good” category; teacher communication met the “good” category; student responses and student activities met the “good” category; and learning objectives were achieved. Based on these five indicators, the effectiveness of learning also met the “good” criteria. Consequently, problem-based learning aimed at developing higher-order thinking skills in the SPLTV curriculum is effective and falls into the high category.
Efektivitas Pembelajaran Berbasis Masalah terhadap Kemampuan Berpikir Kritis dan Literasi Matematis pada Materi Barisan dan Deret Aritmatika kelas X SMK Telkom 1 Medan T.A 2025/2026. gultom, eva meliana; Tambunan, Hardi; Simanjuntak, Ruth Mayasari
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 8, No 3 (2026): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v8i3.27466

Abstract

This quantitative study, employing a one-shot case study design, evaluates the effectiveness of problem-based learning (PBL) on students’ critical thinking skills and mathematical literacy in the topic of arithmetic sequences and series for 10th-grade students at SMK Telkom 1 Medan during the 2025/2026 academic year. The sample was randomly selected from two classes (X RPL 1 and X RPL 2) out of a total population of five classes. Data were collected through tests, questionnaires, and observations that had been validated for validity and reliability, then analyzed descriptively using frequency distribution tables and criteria for the achievement of learning objectives. The results showed that all indicators of effectiveness namely, the systematic nature of instruction, teacher communication, student responses, student activities, and the achievement of learning objectives were met. Thus, the PBM was deemed effective in improving critical thinking skills and mathematical literacy in the subject matter, with the level of effectiveness falling into the high category.
Co-Authors Adi Suarman Situmorang, Adi Suarman Aruan, Anggie Desi K. Bancin, Resy Karina Christine Christina Sitepu Dakhi, Noferia Damanik, Friska Dewi Trymidawati Ellis Mardiana Panggabean Farasi, Dosni Roham Damai Setia Firman Pangaribuan Giawa*, Yulina Giawa, Sentosa Giawa, Yulina gultom, eva meliana Gultom, Kristina Gultom, Limasso Gultom, Sanggam P Hia, Lutemaria Hutapea, Jernyta Futri Agustina Br. Hutauruk, Agusmanto J.B Juraganda S, Chandra Saptanto Laia, Yunus Lena Rosdiana Pangaribuan Lubis, Mindo Juliani Kelly Lumban Toruan, Nia Natasha Luna Theresia Tamhunan M Simanjuntak, Ruth Manalu, Ayunasari Manik, Efron Manik, Jois Febri Marpaung, Melda Melina Siska Marpaung, Riko Kurniawan Naibaho, Tutiarny Napitupulu, Eastman Ndruru, Marinus Pakpahan, Yurni Kristina Pangaribua, Firman Panggabean, Ellis M Panggabean, Ellis M. Pardosi, Monalisa Parsaulian, Benni Polin Pasaribu, Anita Sabrina Pasaribu, Mei Sartika purba, rIcky rikardo Purba, Tuty Novelinda Rani Farida Sinaga Ritonga, Roy Ricardo Roulina, Roulina Rumapea, Lenni Santana Ruth Mayasari Simanjuntak Sembiring, Thresia Yohana Siagian, Rebeka br Sianturi, Esra Chatarina Sianturi, Krismawati Sihite, Epiphanias Br Sihite, Epiphanias Br. Sihombing, Artha Hadia sihombing, dame ifa Sihombing, Heldon Sihombing, Susi Sihotang, Friska Ladista Sihotang, Maria Silaban, Naomi Silalahi, Lulu Brygita Silangit, Menna Sri Ulina Simamora, Dinarti Simamora, Rona Marisa Simanjuntak, Ruth Simanjuntak, Ruth M Simanjuntak, Ruth M. Simanujuntak, Ruth M Simarmata, Eunike Claudia Simbolon, Lolyta Damora Sinaga, Agustina Mayen Rilen Sinaga, Amrinaldo Sinaga, Lorinta Rupmahita Sinaga, Rianda sinaga, samuel juliardi Sinaga, Wita Sitepu, Edi Petra Situmeang, Santi Yohana Situmorang, Mahanda Dinaria Tampubolon, Samto Rediwan Togatorop, Fresty Handayani Yunita Sinaga, Yunita Zagoto, Lidwina Shinta Zebua, Berliance Zamira